Question

A) x+2/3=30 ajudaaa
B) 4x+1/3 - 2-3x/4=26-x/6
C) 2 (2x+2)/2 + 2 (x+6)/3 =14

Answer 1

Resposta:

A) x = 88/3

B) -38/7 = x

C) x = 3

Explicação:

A) x+2/3 = 30

x/1+2/3 = 30/1

(3÷1×x)/3+2/3 = (3÷1×30)/3

3x/3+2/3 = 90/3

3x+2 = 90

3x = 90-2

3x = 88

x = 88/3

B) 4x+1/3-(2-3x)/4 = 26-x/6

[12÷3×(4x+1)]/12-[12÷4×(2-3x)]/12 = [12÷6×(26-x)]/12

[4×(4x+1)]/12-[3×(2-3x)]/12 = [2×(26-x)]/12

16+4/12-6-9x/12 = 52-2x/12

16+4-6-9x = 52-2x

16+4-6-52 = -2x+9x

20-6-52 = -2x+9x

14-52 = -2x+9x

-38 = 7x

-38/7 = x

C) 2×(2x+2)/2+2×(x+6)/3 = 14

2×(x+1)+2×(x/3+2) = 14

2x+2+2x/3+4 = 14

2x+2x/3 = 14-2-4

(3÷1×2x)+(3÷3×2x)/3 = 14-2-4

6x+2x/3 = 14-2-4

8x/3 = 12-4

8x/3 = 8

8x/3 = (3÷1×8)/3

8x/3 = 24/3

8x = 24

x = 24÷8

x = 3